[Bug 22533] Half Life: loading screen rendering is wrong (msrle32 does not handle frames with 0 biClrUsed)

https://bugs.winehq.org/show_bug.cgi?id=22533

--- Comment #18 from Gethyn ThomasQuail  ---
Created attachment 53899
  --> https://bugs.winehq.org/attachment.cgi?id=53899
Screenshot showing possible relation to current bug

Here's another screenshot of a comparison. Now please note, this one in
particular appears without this patch on stock Wine. HOWEVER, I think it might
be relevant to this bug seeing as the new patch produces this effect with the
main AVI used by Half-Life. This mod's (They Hunger) AVI video file info
according to ffprobe:

Video: msrle ([1][0][0][0] / 0x0001), pal8, 640x100, 24 fps, 24 tbr, 24 tbn, 24
tbc